Forms and pedogenic distribution of extractable iron in selected wetland soils in Nigeria.
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0.03 and 0.69 (1993), 0.05 and 68 (1994), 0.05 and 0.53 (1995) in all pedons. This suggests that poor drainage slowed down soil development. Highly significant correlations (0.1%) were evident between phosphorus (P) and organic carbon; ECEC and base saturation; Fe-H and active Fe ratio. Significant correlations (1%)were also evident between Fe2+ and organic carbon; P and Fe-H; ECEC and clay. Furthermore, significant correlations (5%) were also obtained between clay and Fe-d; pH and Fe-d; active Fe ratio and P; Fe-d and clay; active Fe ratio and Fe-d.
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